Anatomical Pathology Interesting Case Conference

HISTORY:

A female in her 60’s with history of ESRD, diabetes mellitus type 2, hypertension, and gout presented for renal transplant evaluation.

MRI revealed a 1.5 cm lesion of the right kidney suspicious for a renal cell carcinoma. A robotic radical nephrectomy with regional lymphadenectomy was performed.

A 1.4 x 1.3 x 1.2 cm well-circumscribed, solid brown lesion was identified within the superior pole. Negative for hemorrhage or necrosis. Lesion does not involve the renal sinus fat, perirenal fat, or renal vasculature.